As a magnetic field is applied along the spiral axis, the magnetic structure deforms into a conical shape, inducing asymmetry in the electronic landscape and resulting in electron-flow rectification.

In the visualization below, the Galactic plane (in blue) can be seen running horizontally across the plot, with the ecliptic ...

And if you look closely, all of those successfully completed passes had one thing in common: They were thrown with a nice, tight spiral. But throwing a perfect spiral isn't as easy as it looks.